CAT 3126E Fault Code: 252-11 PID: Flash Code 59 SPN: 631 FMI: 11 Incorrect Engine Software Posted by Diezel Solutions on April 2, 2025 The Boost Pressure signal voltage is above acceptable range. Share Share on Facebook Tweet Tweet on Twitter Pin it Pin on Pinterest 0 comments Leave a comment Name Email Message Please note, comments must be approved before they are published